diff options
Diffstat (limited to 'src/host')
| -rw-r--r-- | src/host/usbh.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/host/usbh.c b/src/host/usbh.c index 100a17aa4..2ef936ad0 100644 --- a/src/host/usbh.c +++ b/src/host/usbh.c @@ -1000,9 +1000,6 @@ static bool parse_configuration_descriptor(uint8_t dev_addr, tusb_desc_configura TU_ASSERT( TUSB_DESC_INTERFACE == tu_desc_type(p_desc) ); tusb_desc_interface_t const* desc_itf = (tusb_desc_interface_t const*) p_desc; - // Interface number must not be used already - TU_ASSERT( DRVID_INVALID == dev->itf2drv[desc_itf->bInterfaceNumber] ); - #if CFG_TUH_MIDI // MIDI has 2 interfaces (Audio Control v1 + MIDIStreaming) but does not have IAD // manually increase the associated count @@ -1040,7 +1037,11 @@ static bool parse_configuration_descriptor(uint8_t dev_addr, tusb_desc_configura // bind (associated) interfaces to found driver for(uint8_t i=0; i<assoc_itf_count; i++) { - dev->itf2drv[desc_itf->bInterfaceNumber+i] = drv_id; + uint8_t const itf_num = desc_itf->bInterfaceNumber+i; + + // Interface number must not be used already + TU_ASSERT( DRVID_INVALID == dev->itf2drv[itf_num] ); + dev->itf2drv[itf_num] = drv_id; } // bind all endpoints to found driver |